CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The correct order of increasing ionic radius for F, Na+, S2, Cl and K+ is:

A
F<Na+<S2Cl<K+
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Na+<K+<F<ClS2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Na+<FK+<Cl<S2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Na+F<Cl<S2<K+
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C Na+<FK+<Cl<S2
On moving down the group, ionic radius increases due to increase in principle quantum number. Hence, Na+<K+ and F<Cl.
For isoelectronic species, size depends on the number of protons. The ion having the greater number of protons will have smaller size due to the increase in the effective nuclear charge. Thus Cl<S2
However, K+ and F have similar size.
So, the order of ionic size follows the order: Na+<FK+<Cl<S2

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Size of an Atom or Ion
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon